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Elis [28]
3 years ago
13

An ionic bond forms when​

Biology
2 answers:
Ahat [919]3 years ago
7 0

Answer: An ionic bond forms when​ there is a complete transfer of valence electrons from one metal atom to a non metal atom.

Explanation: The purpose of the transfer of the valence electrons from a metal atom to a non metal atom is so that the two atoms can attain a noble gas octet or duplet structure. Since there is a loss of electron by the metal atom and gain of electron by the non metal atom, the compound formed is usually ionic. Ionic bond is also called electrovalent bond.

Assoli18 [71]3 years ago
3 0

Answer: When Ionic bonds involve a cation and an anion. The bond is formed when an atom, typically a metal, loses an electron or electrons, and becomes a positive ion, or cation. Then ions produced are oppositely charged and are attracted to one another due to electrostatic forces.

Explanation:

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Which of the following best describes an aspect of a membrane's molecular structure that causes it to be selectively permeable?
atroni [7]

Answer:

<u>d. Transport proteins within the membrane serve as a tunnel for molecules to enter the cell. </u>

<u />

Explanation:

Solutes are typically moved across the cell through either passive or active transport. The cells, surrounded by a bilipid layer or plasma membrane is amphiphlic- its polar, hydrophilic lipid heads face outwards, while their non-polar hydrophobic lipid tails face inwards towards each other.

While lipid-soluble molecules move across the layer easily, it is also difficult for charged and also large molecules to move across its surface, into the cell. Transmembrane channels, <u>embedded within the membrane</u>, help to maintain selective permeability as transport proteins, pores and gated channels. Simple diffusion happens as a method of passive transport in cells through plasma membranes.

The solutes travel through the plasma membrane in the process of diffusion from regions of high concentration to regions of low concentration; this occurs without the use of energy. <u>Molecules moving against their concentration require active transport mechanism to cross the membrane</u>.

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3 years ago
What keeps the cell membrane from collapsing
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A human lost at sea without fresh drinking water is effectively lost in an osmotic desert. why would drinking salt water be harm
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What is the name of the part which stores genetic information in animal cells?
bagirrra123 [75]
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A plant with a white flower was crossed with a plant with red flowers . All of the offspring had pink flowers . Which of these t
maw [93]
Go online and look up ressesive and dominate Gene's and Gregory Mendel he crossbreed plants such as what you have described and have found some interesting results that do include your red and white crossbreeding to create pink. this is usually called a Punnet Square.

dominate gene
Red = R
White = W
recessive gene
Red=r
White = w

pink is either a mixture of recessive and dominant Gene's or one dominant and one recessive
3 0
3 years ago
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